What is pectus excavatum? Pectus excavatum (PE) is an abnormal development of the rib cage where the breastbone (sternum) caves in, resulting in a sunken chest wall deformity. Sometimes referred to as “funnel chest,” pectus excavatum is a deformity often present at birth (congenital) that can be mild or severe. What causes pectus excavatum? The [Xem thêm…]